ASTM F 3616 : 2025

1.1.1Collates information from existing standardized and non-standardized techniques and explains how the selected test methods can be adopted for contamination detection.

1.1.2Defines contamination types that may be present within metal powders used in Laser Beam Powder Bed Fusion (PBF-LB).

1.1.3Outlines a standardized contamination classification system.

1.1.4Increases awareness of qualitative techniques that might be utilized for contamination detection.

1.1.5Provides an overview of techniques that could be used for contamination detection.

1.1.6Identifies advantages and limitations of commonly used techniques for detection of contamination within metal powders.

1.1.7Provides outputs of contamination detection using different techniques.

1.1.8Provides recommendations on selection of techniques for contamination assessment.

1.2.1Sampling

1.2.2Sample size—The test sample size and analysis duration for each technique can be modified depending on user requirements.

1.2.3Sample preparation

1.2.4Number of tests and retests

1.2.5Controlling moisture in powder feedstock used in additive manufacturing (AM).

1.2.6Acceptance limits for contamination which might be present within metal powders used in AM. Therefore, the standard does not allow material qualification for PBF-LB.

1.2.7The techniques outlined within the document do not enable quantitative analysis of a contamination.

1.2.8This guide does not purport to address all techniques that can be used for contamination assessment. This guide does not cover standardized techniques, which were primary developed for other purposes (for example, Inductively Coupled Plasma Atomic Emission Spectroscopy, Inert Gas Fusion). However, it should be noted that other techniques might be adapted for contamination detection.